exam
Maths Puzzle
Numerical Ability
-54y to the fourth power + 24x Squared
How do i factor this as a difference of two squares?
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exam Other Question
Approximately how long will it take $100 to grow to $500 at 8% annual interest and compounded 12 times per year?
Solve by the substitution method.
4x-5y = 21
5x+21= y